Research to Examine Whether Vaccines Affect Menstrual Cycles

Earlier this year, as Covid-19 vaccines became more widely available, some women and girls went on social media to describe changes in their menstrual cycles after receiving the shots, including irregular cycles, painful periods and heavy bleeding. Some postmenopausal women shared stories

Why We’re Experiencing So Many Unusually Hot Summer Nights

Source: NOAA’s Global Historical Climatology Network·Temperature distributions show daily minimum temperatures for the summer months (June-August) in each decade, measured by the airport weather station. Data for the 2020s consists of the 2020 and 2021 summers. Nights are considered abnormally cold or

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